Rail-anchor.



FRANK G'. DUNIBAR, OF CHICAGO, ILLINOIS, ASSIGNOR TO SARG-EN T COMPANY, A CORPORATION F ILLINOIS.

BAIL-ANCHOR.

Application led January 7, 1915.

To all whom t may concern.'

Be it known that I, FRANK Gr. DUNBAR, a citizen of the United States, and residentA of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Rail-Anchors,v of which the following is a specification.

My invention relates to rail anchors and has particular reference to a novel clamping device for use in connection therewith.

As is well known, it is common to employ devices known as rail anchors which are intended to prevent the longitudinal creeping of railroad rails, many of such devices having been heretofore suggested.

An object in the present construction is to provide an anchor which positively engages the rail base, and, after having once been installed, cannot become disengaged or loosened due to jar or expansion or contraction.

A further object is to provide an anchor which may be installed in the proper location before the clamping means are actuated; that is, so arranged that the tie-abutting shoulder may be placed rigidly against the tie and the clamping device then actuated. In this 'the present device distinguishes from other anchors in which the seating of the shoulder against the tie is coincident with the actuation of the clamp. In such a device the adjustment is likely to be uncertain or insecure, and, therefore, undesirable.

The invention will be more readily understood by reference to the accompanying drawings in which:

Figure 1 is a side elevation ofarail anchor constructed in' accordance with my inventionthe device being shown in its relation to a railroad tie and rail; and Fig.. `2 is a plan view of the construction shown in Fig. 1.

Referring more particularly to the drawings it will be seen that my anchor is shown as associated with a tie 10 and rail 11. The

anchor consists in a body portion or cross bar 12 having a rail-base-engaging hook 13, a tie-engaging shoulder 111 and a clampholding jaw 15. Within the j aw 15 I provide an open-sided recess 16, the outside -wall 17 of which constitutes an extended vertical bearing for the pivot or trunnion 18 of a segment 19. This segment is provided with a toothed rail-engaged face 20, this face being curved eccentrically to the Specification of Letters Patent.

Patented J une 29), 1915.

Serial No. 904.

pivot 18. It will benoted that the outside edge of the pivot or trunnion 18 is straight and hes against the vertical wall 17 throughout the length of the trunnion, providing an extended bearing and eliminating shear strains. The point 21 of the jaw 15 preferably overlies the rail base slightly, thus preventing the sagging of that side of the anchor. It will be noted that the trunnion 18 of the segment is located directly 1n line, transversely, with the center of the hook 13 and also in alinement, longitudinally, with the center of the tie-abutting shoulder. The advantages arising from such construction are obvious, not the least of which is that the clamping and holding forces are applied and taken up in right lines.

In practice the anchor is locked in the desired position with the shoulder directly abutting the tie 10. The segment 19 isthen placed in proper position and is forced by a hammer or similar instrument into tight clamping engagement, the driving force being applied at the point 22. It will he seen that such a device presents many advantages, not the least of which is that of location in the desired position prior to setting the clamp.

Obviously modications may be made in the construction shown and such modifications as are within the scope of my claims I consider within the spirit of my invention.

I claim:

1. In a rail anchor the combination of a railengaging member having a j aw on each end thereof, one engaging the rail base, the other having a vertical recess substantially in line with the rail-engaging jaws, and a segmental clamp having a pivot adapted to be seated in said vertical recess and normally held between said jaws, the rail-engaging face of said segment being toothed and curved eccentrically to the pivot of the segment, substantially as described.

2. In a rail anchor, the combination of a base member having an inturned hook on each end thereof, one of said hooks being adapted to engage a rail base, and an arcubase having a rail engaging hook, an inturned flange on the other end of said base, said ange and said base being provided with a vertical recess and an arcuate clamp`-V ing member having a pivot seated in said recess, said clamping member being guided between said base and said flange, substantially as described. j

4. In a rail anchor, the combination of a transverse base having a rail-engaging hook, an inturned flange on the opposite end of said base, said flange, in service, lying over the top' of a rail base,and an arcuate clamping member pivoted in and held between said base and said flange, substantially as described. l

5. In a rail anchor, the combination of a base having a rail-engaging hook on one end thereof, an inturned flange on the opposite end thereof, said base and flange being pro vided with registering vertical recesses and providing a vertical bearing face of substantial area, and an arcuate clamping member having a vertical pivot which is longer than the thickness of said clamping member and which pivot is adapted to bear 7. In a rail anchor,the combinationof a base Vhaving integral jaws on both ends thereof, both of which jaws are adapted to overlie the base of a rail, and an arcuate clamping member pivoted in and guided between' said base and one of said jaws, substantially as described.

FRANK G. DUNBAR. Y Witnesses:

GEORGE I-I.' SARGENT, M. M. BEYER.

(iopies of this patent may be obtained for've cents each, by addressing the Commissioner of Patents, Washington, D. 0. v 

